摘要
通过民勤樟子松根系分布及生长调查分析表明 :樟子松根系分布集中 ,在 2 50cm范围内 0～ 2 0cm土壤层次中根量占调查根系总量的 50 %～ 6 0 % ;樟子松生长迅速 ,10龄树年高生长量达 6 0cm ,粗生长量达 1.0cm ,移栽苗木 2～ 3年后可达到原地苗的生长速度 ,樟子松适应性强 ,同时对温度、光照和水分等因子的敏感性较强 ,充足的光照、水分 ,有利于其生长 ,干旱、低温条件下 。
Through the investigation and analysis,the result of distribution of root system and growth of Pinus sylvestris var.mongolica in Minqin showed that the root distribution of Pinus sylvestris var.mongolica more concentrated.The root range of horizontal distribution was 0～250 cm and vertical distribution was 0～20 cm and occupying 50%～60% of total amounts.The growth was more quickly than other ever green trees in Minqin.Annual high growth was about 60cm and diameter growth was above 1.0 cm at 10 year tree ages.The comparison with other evergreen trees in Minqin,the adaptability of Pinus sylvestris var.mongolica is more better.After2～3years,the growth speed of transplanted seedlings could reach originals' and it was sensitive to temperature,illumination and moisture.The growthspeed was faster under the sufficient illumination and moisture,and slower in dry and low temperature.
出处
《防护林科技》
2000年第3期46-49,共4页
Protection Forest Science and Technology
关键词
民勤县
樟子松
根系分布
生长适应性
Minqin
Pinus sylvestris var.mongolica
root distribution
growth adaptability
